Rheem has been the leader in water heating for nearly 100 years, offering savings, comfort and the protection you need. Providing continuous hot water in a compact, space savings design, Rheem tankless water heaters are the perfect solution for any sized home. Rheem RTGH series can safely dispose of condensate with it's industry first built-in condensate neutralizer. With the built-in EcoNet®, you can manage your Rheem heating, cooling and hot water heating equipment.
Longer vent runs give you more versatility for installation. With the option to have up to a 150' run with 3" PVC, you can achieve your ideal installation.
Low Flow Activation
Ideal performance even in low demand situations, the Rheem RTGH has a minimum flow rate of 0.26 GPM and a minimum activation flow rate of 0.40 GPM that will ensure you will receive hot water when you need it.
Receive mobile alerts of water and gas usage as well as notifications and maintenance reminders for your tankless water heater.
Water Savings Setting
Save up to 1,100 gallons of water a year with the Water Savings Setting on the Rheem RTGH tankless water heater. Water flow is decreased through the pipes until the temperature reaches the heater's set temperature.
Built-In Condensate Neutralizer
An industry first, the Rheem RTGH comes with a built-in condensate neutralizer. Safely dispose of condensate without additional installation cost and time.
Exclusive! Water Savings Setting– upon activation, this setting can save homeowners up to 1,100 gallons of water per year by decreasing the flow of water through the pipes until the temperature reaches the heater’s set temperature
Industry Leading Low Flow Activation- Minimum flow rate of .26 GPM and minimum activation flow rate of .40 GPM ensures the user will receive hot water even in low demand situations
Recirculation Pump Kit-Ready– Providing faster hot water at the tap and savings of up to 12,000 gallons water/year
Exclusive! Hot Start Programming- Minimizes cold water bursts by staying in ready-fire state for back-to-back hot water needs
New! 2" Venting with band connections
New! Vent up to 150 ft with 3" PVC and 60 ft with 2" PVC
Built-in condensate neutralizer
1/2" Gas line compatibility up to 24 ft.
Exclusive! Maintenance Notice Setting- Alerts homeowner, after 500 hours of use, to call for service check (optional)
Self-diagnostic system for easy installation and service
High-altitude capability – up to 8,400 ft. elevation above sea level
Digital remote control now pre-wired and 10 ft. of thermostat wire included
Requires a 120-volt power cord (indoor models only)
EcoNet Enabled - all Tankless products from 2010 to present can connect to EcoNet mobile app via Tankless EcoNet Accessory Kit (REWRA630TWH)
For higher demand application, easily link multiple tankless units to operate as one system:
2 Units: EZ Link Cable
Up to 6 units: MIC-6 Control Board
Up to 20 units: MIC-185 plus MICS-180 manifold control assembly
Exclusive! Overheat Film Wrap- prevents dangerous temperatures and provides industry best side-to-side clearance of 1/2 inch